Multiplex communications – Pathfinding or routing – Switching a message which includes an address header
Reexamination Certificate
2005-01-19
2008-08-12
Phan, Man (Department: 2619)
Multiplex communications
Pathfinding or routing
Switching a message which includes an address header
C370S238000, C370S389000, C370S401000, C709S223000
Reexamination Certificate
active
07411963
ABSTRACT:
A method and apparatus for the dissemination of non-routing information to nodes of a network is provided. A new type of IS-IS packet (called a NRI IS-IS packet) is described that exclusively carries non-routing information. When the NRI IS-IS packet is received by a router, the router may send the NRI IS-IS packet to an appropriate component responsible for processing non-routing information, without analyzing, verifying, and validating the information carried in each TLV and sub-TLV of the NRI IS-IS packet. Advantageously, the time it takes for routers of the network to achieve convergence is decreased since a IS-IS packet reader need not analyze, verify, and validate information not related to network topology and IP routing. Therefore, when NRI IS-IS packets are received, there is no impact in the convergence time of nodes in the network.
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Previdi Stefano B.
Vasseur Jean-Philippe
Ward David D.
Cisco Technology Inc.
Hickman Palermo & Truong & Becker LLP
Phan Man
LandOfFree
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